Apparatus for deodorising lavatories and the like



March 14, 1967 B. HOLLAND APPARATUS FOR DEODORISING LAVATORIES AND THE LIKE Filed Jan. 27, 1964 United States Patent 3,308,482 APPARATUS FOR DEODORISING LAVATORIES AND THE LIKE Douglas Berry Holland, 8a Church St., North Sydney, New South Wales, Australia Filed Jan. 27, 1964, Ser. No. 340,408 1 Claim. (Cl. 4-228) This invention relates to automatic apparatus for effecting the deodorisation in lavatories and the like wherein a measured quantity of deodorising fluid is delivered to the flushing water at each flushing operation, and has particular reference to the type of apparatus forming the subject of Commonwealth Patent No. 152,743.

In the known forms of deodorising apparatus, particularly that of the before mentioned patent, the amount of deodorant fluid supplied at each flushing operation is constant and there is no provision for adjustment of the quantity to suit a particular requirement thereby tending to wastage of the deodorising fluid. For example, where the apparatus is used in the automatic flushing cisterns of urinals that flush frequently, but where the convenience of which is used infrequently, only a small amount of deodorising fluid is required for each flush. Also, with frequent domestic use a reduction of output of the deodorising fluid is desirable. On the other hand where urinals are use-d frequently and where weather, ventilation and other factors have to be considered, so as to offset unhealthy and unpleasant conditions arising therefrom a larger output of deodorant fluid is required for the flushes. Further, with infrequent domestic use the charge of deodorant fluid supplied in the cistern for conveyance to the toilet bowl with a flush can be dissipated in the long intervals between flushing with resultant ineffective deodorisation and cleaning of the said bowl.

The present invention has been devised to provide an improved construction of the deodorising apparatus which is of simple, efficient and reliable construction whereby the before stated disabilities are obviated and the amount of deodorant fluid to be supplied can be easily adjusted to suit various requirements.

According to this invention, the automatic deodorising apparatus for deodorising lavatories and the like, is characterised by a deodorant measuring and dispensing valve having a body with a bore passage extending axially thereof from a closed top or outer end to the open lower end formed for connection to a supply container holding a quantity of the deodorant fluid, said bore passage containing a fluid supply adjusting member extending thereinto from the top or outer end and arranged for advancement into and retraction from said bore passage for reducing or increasing the volumetric area thereof, and having means for locking a setting, a first and upper nozzle providing an air entry extending out from the said bore passage and body, and a second nozzle preferably of longer form also extending out from said bore passage and body at a location below and on the opposite side to said first nozzle and constituting the water entry and deodorant fluid outlet.

The nozzle may be downwardly inclined and have the outer ends cut or bevelled across in suitable manner.

In order to describe the invention more fully reference will now be made to the accompanying drawings wherein:

FIGURE 1 is a side elevation partly in section showing a preferred form of the deodorising apparatus, and

FIGURE 2 is a plan of same,

FIGURE 3 is a sectional elevation of a modification of the measuring and dispensing valve, while FIGURE 4 is a perspective view of a cistern with a portion of the side wall cut away to show the apparatus fitted in a flushing cistern.

The deodorant measuring and dispensing valve has a hollow cylindrical body 5 preferably die cast, with an externally screwed lower end 6 which is fitted with a gasket 7, and a bore passage 8 extends through said body 5 to near the closed top end, and there is a first and upper nozzle 9 extending out and inclining down at one side and has an air entry passage 10 extending therethrough to the said bore passage 8. The end of this upper nozzle 9 has its end 11 cut across at an angle inclining in towards the body 5.

At the opposite side of the body 5, to that of the upper nozzle 9, there is a second nozzle 12 of longer length and also inclining down, and has its end 13 cut across in a direction horizontal to the axis of said body 5, and a passage 14 leads through said nozzle to the bore passage 8. This passage 14 forms the water entry and deodorant fluid outlet.

In FIGURE 1, the supply adjusting member 15 is of headed screw-like form, the head of which has a cross cut therein for manipulation purposes, and a locknut 16 is provided thereon. Said supply adjusting member 15 screws through a threaded orifice formed axially of the body 5 at its top end.

Referring to FIGURE 3, the top end of the body 5 is inclined to one side at 17, and its threaded orifice is ar ranged in line with the air entry passage 10 which is formed in similar manner to that shown in FIGURE 1, and the other parts are similar. The supply adjusting member 15 is fitted through a threaded hole in the top 17.

The container preferably of die-cast form as shown, is made in two half parts 18 and 19 each of bowl-like form with the base closed and the two open ends fittted together by means of spigot 20 on part 18 fitting in a recess of a surrounding flange 21 which is swaged over the said spigot 20 closing the joint and clamping the parts 18-19 securely together in a liquid tight manner.

In use, the quantity of deodorant to be dispensed is regulated by the supply adjusting member 15 which can be advanced into the bore passage 8 or retired therefrom.

The container 1819 has a screwed hole 22 in the top part 18 into which the body 5 is screwed and tightened onto the gasket 7. Such container is filled with a suitable deodorant preferably of a light more or less volatile form, the body 5 being removed for the purpose and then tightly replaced, and the apparatus positioned on the floor of a flushing cistern 22 of any suitable form as shown in FIG- URE 4.

Water rising in the cistern 23 enters the second nozzle 12 and flows through the passage 14 to the bore passage 8 and so enters the container 18-19 and sinks to the bottom thereof, displacing an equal bulk of fluid which is forced up the said bore passage 8 until the water still rising in the cistern 23 reaches the first nozzle 9 and seals it. A measured quantity of deodorising fluid is thus in suspension in the second nozzle 12 until the lavatory cistern is flushed when the said deodorising fluid flows out of the said second nozzle 12 as the water recedes.

The cutting or bevelling of the end of the first nozzle 9 allows the seal to be quickly broken as the water recedes v in a flushing operation and also provides for the gradual sealing thereof as the water level rises after completion of the flush thereby rendering the working of the valve device more eflicient and obviating any tendency to air lock.

It will be readily seen from the foregoing description that the action of the apparatus is entirely automatic and that there are no moving parts to get out of order.

It is to be understood that the invention is not limited to the precise form of the measuring and dispensing valve, or to the shape of the container or the material thereof as the latter may be varied to suit different requirements.

I claim:

Automatic deodorising apparatus for deodorising lavatories and the like, characterised by a deodorant measuring and dispensing valve having a body With a bore passage extending axially thereof from a closed top or outer end to the Open lower end formed for connection to a supply container holding a quantity of the deodorant fluid, said bore passage containing a fluid supply adjusting member extending thereinto from the top or outer end and arranged for advancement into and retraction from said bore passage for reducing or increasing the volumetric area thereof, and having means for locking a setting, a first and upper nozzle providing an air entry extending out from the said bore passage and body, and a out from said bore passage and body at a location below and on the opposite side to said first nozzle and constituting the Water entry and deodorant fluid outlet, the fluid supply adjusting member being of headed screw-like form screwing through a threaded orifice in the body, the fluid supply adjusting member being arranged at one side of the bore passage of the body.

References Cited by the Examiner FOREIGN PATENTS 445,794 4/1936 Great Britain.

LAVERNE D. GEIGER, Primary Examiner.

second nozzle preferably of longer form also extending 15 H. GROSS, Assistant Examiner. 

